Foma still produces DS8mm film some companies offer respooled film:
You can develop the B/W and e6 film at home with the right chemistry, there used to be a spool/tank made for developing 8mm film at home.
Bolex is quiet good but you pay a premium, the Eumig C3 is just as good at a lower price. The Pathé DS8/BTL Double Super 8 is another good choice. 8mm cameras usually have better registration than their Super 8 cousins unfortunately 8mm isn't as available as Super8.

Good luck